838446664 has 32 divisors (see below), whose sum is σ = 1815890400. Its totient is φ = 358693120.

The previous prime is 838446601. The next prime is 838446667. The reversal of 838446664 is 466644838.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (838446667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278734 + ... + 281725.

It is an arithmetic number, because the mean of its divisors is an integer number (56746575).

Almost surely, 2^838446664 is an apocalyptic number.

It is an amenable number.

838446664 is an abundant number, since it is smaller than the sum of its proper divisors (977443736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

838446664 is a wasteful number, since it uses less digits than its factorization.

838446664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560493 (or 560489 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 49.

The square root of 838446664 is about 28955.9435004284. The cubic root of 838446664 is about 942.9568368850.

The spelling of 838446664 in words is "eight hundred thirty-eight million, four hundred forty-six thousand, six hundred sixty-four".